OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
MAPLE
a:= n-> n! * coeff (series (cosh(x)/exp(tan(x)), x, n+1), x, n):
seq (a(n), n=0..30); # Alois P. Heinz, May 16 2012
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Cosh[x]/Exp[Tan[x]], {x, 0, nn}], x] Range[0, nn]!] Harvey P. Dale, May 16 2012
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified by Harvey P. Dale, May 16 2012
STATUS
approved